Need someone to lead product management at your software company? I create software for people that create software and I'm looking for my next opportunity. Check out my resume and get in touch.

Adam Kalsey

This is the blog of Adam Kalsey. Unusual depth and complexity. Rich, full body with a hint of nutty earthiness.

Security & Privacy

Personal firewall advantages

Freshness Warning
This blog post is over 21 years old. It's possible that the information you read below isn't current and the links no longer work.

9 Oct 2003

Another thing a software firewall can do that a NAT router cannot is protect computers on your network from the other computers on your network.

If one of your computers gets compromised or infected, or if a user on your network decides to be malicious, a NAT router won’t help you one bit. Traffic between computers on your network doesn’t pass through NAT, so a worm on one computer can infect all the other computers. A hacker who gains access to you network can then attack any machine on your network. If you have a wireless access point on your network, anyone connecting to it is immediately behind your NAT router and can connect to your other computers.

A software firewall like ZoneAlarm, Outpost, or Norton Personal Firewall can prevent such intrusions from your own network.

Recently Written

A Framework for Scaling product teams
Oct 9: The people, processes, and systems that make up a product organization change radically as you go through the stages of a company. This framework will guide that scaling.
My Networked Webcam Setup
Sep 25: A writeup of my network-powered conference call camera setup.
Roadmap Outcomes, not Features
Sep 4: Drive success by roadmapping the outcomes you'll create instead of the features you'll deliver.
Different roadmaps for different folks
Sep 2: The key to effective roadmapping? Different views for different needs.
Micromanaging and competence
Jul 2: Providing feedback or instruction can be seen as micromanagement unless you provide context.
My productivity operating system
Jun 24: A framework for super-charging productivity on the things that matter.
Great product managers own the outcomes
May 14: Being a product manager means never having to say, "that's not my job."
Too Big To Fail
Apr 9: When a company piles resources on a new product idea, it doesn't have room to fail. But failing is an important part of innovation. If you can't let it fail, it can't succeed.

Older...

What I'm Reading